JPH0216537Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a plug with a voltage switching device that can be used with two types of outlets with different outlet shapes and supplied electricity voltages. be.

[Conventional technology]

In recent years, overseas travel and overseas business have become popular.
There is an increasing number of opportunities for people to bring electrical appliances such as hair dryers and electric razors with them when they travel overseas. In general, electricity supply methods overseas are often different from domestic methods.
For example, the shape of the outlet socket may be different, or the voltage of the electricity supplied from the outlet may be different. or cannot be used because the necessary working voltage cannot be obtained.

For this reason, electrical products that can be used both domestically and overseas are usually equipped with a switching voltage switch on the main body of the product. It can be used for two types of standard voltage. When using this electrical product overseas, it has been known to use a replacement plug if the shape of the insertion member of the product's power plug differs from the shape of the outlet of the outlet.
The replacement plug is a plug whose insertion member is made to match the shape of the outlet of the outlet so that the power plug can be inserted into the outlet, and is used by being inserted and connected to the end of the power plug. be.

[Problem that the invention attempts to solve]

However, the above-mentioned replacement plug can be inserted into the desired outlet by simply connecting it to the end of the power plug, but since it is connected to the power plug, it protrudes from the power plug, and when used by plugging it into the outlet, The plug is very unstable, as the plug easily comes off, and since the replacement plug is separate, it is inconvenient that it must be carried with the electrical appliance at all times.

Furthermore, when using an electrical product by connecting the replacement plug mentioned above to a power plug, be sure to check the voltage of the electricity supplied from the outlet and then operate the operating voltage selector switch on the product body according to the voltage. However, if you make a mistake in operation, for example, if you apply an excessive voltage that is higher than the rated voltage to the product itself, there is a risk that the product will be damaged and an unexpected accident will occur.On the other hand, if the voltage is below the rated voltage, there will be a voltage shortage. In this case, the product has drawbacks such as not being able to fully demonstrate its original performance or becoming inoperable.

[Means for solving problems]

As a result of intensive research in view of the above issues, the inventor of this invention found that
It has two types of plug-in members of different shapes, and the members are replaceable according to the shape of the outlet of the outlet, and has a voltage switching device for dividing the electricity from the outlet taken in through the metal member into different voltages. The plug can easily be used with two types of outlets with different shapes of outlets without using conventional replacement plugs, allowing electrical products to accurately switch between different voltages of electricity from outlets. They discovered that the plug is capable of transmitting power to the power supply circuit side of the standard voltage, and completed the present invention.

That is, the plug with a voltage switching device of the present invention includes, in the plug body, an insertion metal member having two different shapes, a voltage switching contact terminal connected to the metal member, and an output terminal that can be contacted with the contact terminal. A plurality of output terminals are provided, and the metal member and the contact terminal can be slid together with respect to the plug body, and the contact terminal is brought into contact with a different output terminal side by sliding, and the contact is switched. It is characterized by:

〔Example〕

Hereinafter, embodiments of the present invention will be described based on the drawings.

FIG. 1 shows an embodiment of a plug with a voltage switching device, and the plug 1 with a voltage switching device basically consists of a metal member 2 for insertion, a contact terminal 3 for voltage switching, and a plug body 4. It is composed of

The metal member 2 for insertion has two different shapes, and the shapes are in line with various shapes of the outlet of the outlet, such as a parallel blade type, a round pin type, a C type, and a square type. Examples of shapes include: The metal member 2 is configured as a set of two metal members of the same shape because there are usually two sockets for an outlet, and the metal member 2 is inserted into the outlet. In addition, 3
If the outlet has two outlets,
Constructed as a set of three metal members. Also, 2
Metal members of different shapes may be formed as one body, or may be formed as separate bodies.

By making the two types of plug metal members 2 of different shapes as described above protrude alternately from the plug body 4, the plug 1 of the present invention can be used as a plug that can be used for two types of outlets with different shapes of sockets. This is to make it possible.
For example, when the insertion metal member 2 is a round pin type metal member 5 and a parallel blade type metal member 6 as shown in FIG. Or parallel blade type metal member 6
It can be used as a plug 1 with a protruding part.

The plug 1 of the present invention has two metal members 2 of different shapes fixed in opposite directions to each other by an insulator 7 so that the metal members 2 of different shapes can be used by protruding alternately from the plug body 4. However, the metal member 2 fixed by the insulator 7 is configured to be slidable within the plug body 4.

The slide mechanism for making the metal member 2 slidable includes two levers 8 and 9 for guiding and fixing the insertion metal member 2 to the plug body 4, as shown in FIG. The above insulator 7
A spring 10 whose one end is connected to the plug body 4 is provided in the center of the round pin-shaped metal member 5.
When protruding from the plug body 4 (Fig. 1),
The round pin type metal member 5 protrudes from the plug body 4 through the guide hole 8a of the lever 8 in the pushed state, and on the other hand, since the parallel blade metal member 6 is fixed by the lever 9, the round pin type metal member 5 is also fixed at the same time. Then, when the parallel blade type metal member 6 is made to protrude from the plug body 4 from this state, the insertion metal member 2 and the insulator 7 are pushed in by pushing the lever 9.
slides due to the contraction force of the spring 10 provided on the insulator 7, and the parallel blade metal member 6 protrudes from the plug body 4 through the guide hole 9a, and then the lever 8, which is in the pushed state, moves upward. Since the round pin type metal member 5 is fixed, the parallel blade type metal member 6 is also fixed at the same time (FIG. 2). The slide mechanism is not limited to the above-mentioned method, and various other mechanical methods can be used.

The plug 1 of the present invention is provided with a voltage switching device for dividing the electricity taken in from the outlet via the metal member 2 into different voltages when the metal member 2 for insertion is slid by the slide mechanism to alternately protrude from the plug body 4. have
As this device, an insulator 7 is provided with a voltage switching contact terminal 3 connected to one side of the metal member 2, and a plug body 4 is provided with three contact terminals for transmitting electricity from the outlet to the power supply circuit of the electrical product. Output terminal 1
1, 12, and 13 are provided.

Since the voltage switching contact terminal 3 is provided on the insulator 7, it can be slid integrally with the insertion metal member 2 by a sliding mechanism, and the output terminal that can be contacted with the two contact terminals 3 by the slide It has a switch function in which the contact point is switched by touching either 12 or 13. The two output terminals 12 and 13 connected to the contact terminal 3 by switching divide the electricity from the outlet into one of the output terminals 12 and 13 according to voltage and transmit the electricity to the power supply circuit of the electrical product. Further, the output terminal 11 is used to constantly transmit electricity from an outlet taken in from the metal member 2 side different from the metal member 2 connected to the contact terminal 3 to the power circuit side where the power switch of the electrical appliance is located. The contact terminal 11 is connected to one metal member 2 different from the connected metal member 2 by a lead wire, a contact method, or the like.

In other words, the voltage switching device switches the connection of electricity of different voltages taken into each of the two different shapes of the insert metal members 2 to either of the two contact terminals 12 and 13 using the voltage switching contact terminal 3. It is structured so that it can be divided into voltages according to the voltage and can be transmitted to the power supply circuit side of the standard voltage of the electrical product.
When the plug 1 of the present invention is used with the round pin-shaped metal member 5 protruding as shown in FIG. 3
is in contact with the output terminal 12 side, so that the electricity from the outlet taken in from the member 2 can be transmitted from the output terminal 12 to the electrical appliance via the contact terminal 3, and as shown in FIG. 1 with the parallel blade metal member 6 protruding, the voltage switching contact terminal 3 comes into contact with the output terminal 13 by sliding the parallel blade metal member 6 and protruding from the plug body 4. The electricity taken in from the outlet 2 can be transmitted to the electrical appliance from the output terminal 13 via the contact terminal 3.

The plug 1 of the present invention transmits electricity from an outlet to the power circuit of an electrical appliance from an output terminal, and connects connection cords 14, 15, and 16 to three output terminals 11, 12, and 13, respectively, and connects the outlet to the outlet. The connection cord is connected to a predetermined terminal of the power supply circuit of the electrical appliance, taking into consideration the voltage of the supplied electricity, etc., and power is transmitted. An electrical product that can be connected to the plug 1 of the present invention has a power circuit that can be used for two types of voltages. The connection between the output terminal and the connection cord can be made by fixing it with solder or the like and connecting it directly, or by forming the output terminal into a jack shape, etc., so that the connection between the output terminal and the connection cord can be made detachable. You may.

Next, the present invention will be explained in more detail by giving various examples in which the plug 1 of the present invention is actually used.

FIG. 3 shows an embodiment in which the plug 1 of the present invention is used as a power plug for an electric product (such as a hair dryer). The plug 1 has a structure similar to the internal structure of the plug shown in FIG. It is connected to a dryer 20 having a power supply circuit such as a power switch 19 using a connection cord. In this case, the connection is the output terminal 11 of plug 1.
The connection cord 14 from the output terminal 12 is connected to the terminal 21 on the power circuit side where the power switch 19 of the dryer 20 is located, and the connection cord 15 from the output terminal 12 is connected to the dryer 20.
Connect the connection cord 16 from the output terminal 13 to the terminal 22 on the 220V power circuit side of the dryer 20.
Connect each to terminal 23 on the 100V power supply circuit side.

Therefore, when the plug 1 is inserted into an outlet that has a round pin-shaped socket and supplies 220V electricity, the round pin-shaped metal member 5 protrudes and the voltage switching contact terminal 3 is connected at the same time. is switched to the output terminal 12 side, so the outlet
For 220V electricity, output terminal 11 and output terminal 12
from dryer 2 via connection cords 14 and 15.
Power is sent to the 0 220V power supply circuit. Further, the above-mentioned plug 1 has a parallel blade-shaped insertion opening, and
When plugged into an outlet supplying 100V electricity, by protruding the parallel blade metal member 6, the voltage switching contact terminal 3 is connected to the output terminal 1 at the same time.
3 side, the 100V electricity from the outlet is connected to the 100V electricity from the dryer 20 via the connection cords 14 and 16 from the output terminals 11 and 13.
Power is transmitted to the power circuit of the

FIG. 4 shows an embodiment in which the plug 1 of the present invention, in which a rectifier is provided between the output terminals, is used as a power plug for an electrical product (such as a hair dryer). Output terminal 12 and output terminal 1 in plug 1
By providing a rectifier 24 between the plug 1 and the plug 1, the plug 1 can be used as a power plug that can be connected to an electric appliance using two connection cords. For example, connect plug 1 to nichrome wire 1
7. Connect to the dryer 25 which has a power circuit such as a motor 18 and a power switch 19 using a connecting cord, and the connection is made via a connecting cord 26 from the output terminal 11 of the plug to the power circuit side where the power switch of the dryer 25 is located. output terminal 13 to terminal 27 of
The connection cords 28 from the terminals are connected to the terminals 29 of the power supply circuit of the dryer 25, respectively.

Therefore, the electricity from the outlet taken in by the parallel blade metal member 6 is transmitted from the output terminals 11 and 13 to the power supply circuit of the dryer 25 via the connection cords 26 and 28, respectively, and is also taken in by the round pin metal member 5. Electricity from the outlet is rectified by the rectifier 24, and is connected to the connection cord 2 from the output terminal 13 similarly to the parallel blade metal member.
Power is transmitted to the power supply circuit of the dryer 25 via 6 and 28.

FIG. 5 shows an embodiment in which the plug 1 of the present invention is used in combination with a transformer. The output terminal of the plug 1 is connected to the predetermined circuit side of a commonly known transformer, and the plug part 30 and transformer part 31 of the plug 1 of the present invention are integrally configured, and electricity is connected via the connecting cord 32. It transmits power to the product. An example of an adapter having the above configuration is a charging power adapter, which can be used as an adapter that can be inserted into two types of electrical outlets having different shapes.

FIG. 6 shows an embodiment in which the plug 1 of the present invention is built into a main body of a rechargeable electric product (a rechargeable electric razor). The plug 1 of the present invention is attached to the plug portion 30 of the rechargeable electric razor body 33.
By connecting the charging circuit of the razor 34 and the output terminal of the plug 1, it is possible to charge the razor 34 into outlets having different shapes of sockets.

In addition, in the plug 1 of the present invention, as shown in the above embodiment, the insertion metal member 2 always has one side attached to the plug body 4.
The metal member 2 may be formed to protrude from the plug body 4, or, although not particularly shown, the metal member 2 may be formed to be completely housed in the plug body 4 when the plug is not in use.

[Effect of idea]

As explained above, the plug with a voltage switching device of the present invention has a plug body that includes an insertion metal member of two different shapes, a voltage switching contact terminal connected to the metal member, and a contact terminal that can be contacted with the contact terminal. A plurality of output terminals including an output terminal are provided, and the metal member and the contact terminal can be slid together with respect to the plug body, and the contact terminal comes into contact with a different output terminal side by sliding. Because the contacts are switched, there is no need to use conventional replacement plugs for two types of outlets that have different shaped outlets, and it is easy to replace the metal parts according to the shape of each outlet. It is possible to use an insert member. In addition, according to the present invention, the connection between the voltage switching contact terminal and the output terminal is switched when replacing the inserted metal member by sliding it, so there is no possibility of damage to electrical products due to incorrect voltage switching operation as in the past.
It is possible to accurately and safely switch the working voltage without the risk of malfunction, and it has various effects such as eliminating the need for the working voltage switching switch that was conventionally installed in electric appliances. It is something.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a plan sectional view showing the internal structure of the plug of the present invention, and FIG.
The figure is a plan sectional view showing a state in which the plug of the plug shown in Fig. 1 is replaced with a protruding metal member, and Fig. 3 is a schematic diagram showing a state in which the plug of the present invention is connected to a dryer.
Figure 4 is a schematic diagram showing the connection state between the plug of the present invention equipped with a rectifier and a dryer, Figure 5 is a perspective view showing a charging power adapter equipped with the plug of the present invention, and Figure 6 is a built-in plug of the present invention. FIG. 2 is a perspective view showing a rechargeable electric razor. 1...Plug, 2...Insert metal member, 3...
Voltage switching contact terminal, 4...Plug body, 1
1, 12, 13...output terminals.

Claims (1)

[Scope of utility model registration request] The plug body is provided with an insertion metal member having two different shapes, a voltage switching contact terminal connected to the metal member, and a plurality of output terminals including an output terminal that can contact the contact terminal, A plug with a voltage switching device, characterized in that the metal member and the contact terminal are slidable together with respect to the plug body, and the contact terminal is brought into contact with a different output terminal side by sliding, and the contact is switched. .